I Have this weird issue and would appreciate any suggestions or help in resolving, i have a Lync 2010 environment, 2 FE servers, a TMG reverse Proxy, 2 Edge servers, and i have open federation. recently i had a SIP domain change, and i made sure i followed all the required process, i updated DNS records, created new certificates and added the new SIP domain to the cert SAN. recently when i try joining a conference sent from a federated partner, i get disconnected after about 10 secs. I enabled Logging on the Client side and i see the following through snooper:
ms-diagnostics: 1034;reason="Previous hop federated peer did not report diagnostic information";Domain="xxxxx.com";PeerServer="sip.xxxxx.com";source="sip.xxxxx.com"
SIP/2.0 481 Call Leg/Transaction Does Not Exist
Ms-client-diagnostics: 52085;reason="Dialog does not exist"
